Snow falling onto a building in the city with gray skies. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3293199/free-photo-image-rain-and-clouds-aerial-view-apartment-buildingFree Image from public domain licenseA music teacher surrounded by his female pupils, in a studio setting in Sophia. Photograph, 1904. https://www.rawpixel.com/image/14004813/photo-image-person-music-clothingFree Image from public domain license